"I am unable to provide sexual intercourse yesterday." A beat passes and he adds, roughly, "I am aware that is a colloquialism."

And then, for a moment, Spock does not speak. It remains clear he keeps focused, pays attention, that he hears what Jim has to say: he nods jerkily on a groan drawn out by the bite to his lip, kissing him hungrily another moment as he shifts them both, as he rests back slightly on his knees and drags jim closer against him, one leg still over his arm and the other able to stretch out past Spock's body.

There is a brief span of seconds where Spock just looks down at him, something indescribable in his eyes despite how fully blown his pupils are: he is, in fact, exhibiting The Gaze in real time, distracted and flustered by how much he loves Jim Kirk.

Jim is still babbling the entire while though, and Spock manages to shake himself out of it with another nod, taking a ragged breath before carefully positioning himself, keeping them both steady, and carefully rocking his hips forward—slow, but not agonizingly so because he is struggling to keep hold of the thin thread of self-control he has remaining.